atomicMaxF.h File Reference

#include <alpaka/alpaka.hpp>
#include "FWCore/Utilities/interface/bit_cast.h"
#include "HeterogeneousCore/AlpakaInterface/interface/config.h"

Go to the source code of this file.

Functions
template<typename TAcc , typename = std::enable_if_t<alpaka::isAccelerator<TAcc>>>
ALPAKA_FN_ACC static ALPAKA_FN_INLINE float	atomicMaxF (const TAcc &acc, float *address, float val)

Function Documentation

atomicMaxF()

template<typename TAcc , typename = std::enable_if_t<alpaka::isAccelerator<TAcc>>>

ALPAKA_FN_ACC static ALPAKA_FN_INLINE float atomicMaxF ( const TAcc &  acc, float *  address, float  val  )

static

Definition at line 21 of file atomicMaxF.h.

References edm::bit_cast(), runTheMatrix::ret, and heppy_batch::val.

Referenced by ALPAKA_ACCELERATOR_NAMESPACE::hcalFastCluster_exotic(), ALPAKA_ACCELERATOR_NAMESPACE::hcalFastCluster_multiSeedIterative(), and ALPAKA_ACCELERATOR_NAMESPACE::hcalFastCluster_multiSeedParallel().

                                                                                                   {
  // CPU implementation uses edm::bit_cast
  int ret = edm::bit_cast<int>(*address);
  while (val > edm::bit_cast<float>(ret)) {
    int old = ret;
    if ((ret = alpaka::atomicCas(acc, (int*)address, old, edm::bit_cast<int>(val))) == old)
      break;
  }
  return edm::bit_cast<float>(ret);
}